Zhang Jingwei has been wearing a police uniform for twenty-seven years, and he is very attentive to every case, but he can't do all the cases himself.

"Hey, Xiao Yu, do you have time to come over later?" When Qin Lei dialed Jiang Chengyu's phone, Wu Feng had just sent Jiang Chengyu and the others out of the hotel.

"Senior Qin, what's the matter?" Jiang Chengyu received a call from Qin Lei, and when he heard it, he thought about whether there was something new in that case.

"It's about that case, I found out all the locations, and I still haven't found any valuable clues, so let you come over and see if you can help." Qin Lei said helplessly.

"Okay, where are you, I'll go over to find you, and it's convenient to bring a few people, right?" Later, Lin Yuchen and Lin Xingping were going to pick up their mother at the airport, and Lin Yulian seemed to be going too. Liu Zigeng and the others just said that they would go to celebrate in the evening, and now there is nothing to do, so let them follow them.

"With whom? Do you want me to come and pick you up? ”

"No need, your captain's son and his two friends are with me, we have a car here."

"My captain's son?" Qin Lei repeated, looking at Zhang Jingwei, Zhang Jingwei's brows moved when he heard this, thinking that his son had indeed gone out today, and motioned to Qin Lei not to say that he was also there.

"Zhang Junzhe, is that the name?" Jiang Chengyu said to Zhang Junzhe who was not far away.

"What did the eldest brother call me?" When Zhang Junzhe heard it, he immediately ran over and asked.

On the other end of the phone, Qin Lei had already turned on the speaker just now, so Zhang Jingwei could tell that it was his son's voice as soon as he heard it, but what was the matter with his eldest brother Jiang Chengyu?

"Take you to a friend of mine, and you go and talk to them." Jiang Chengyu on the other end of the phone said.

"Then it's good if you have a car, I'm in the cocoon Yunyu coffee house, you can search on the map to know the route, call me when you arrive." Qin Lei said into the phone.

"Okay, then let's go over," Jiang Chengyu heard that Qin Lei's voice had changed slightly, confirmed that he turned on the speaker, wondered if there was anyone else next to him, and then set his eyes on Zhang Junzhe.

After hanging up the phone, Ah Da Ah Er had already driven the car over, Jiang Chengyu said goodbye to Lin Yuchen and the others, saying that he would pick up Lin Yuchen when he went to work tomorrow, which caused Lin Yulian to give him a "I understand" look.

After getting in the car, Jiang Chengyu told Liu Zigeng and the others about it, "When the meeting passes, don't mention what happened here today." "Although people have been warned not to talk about it before, there will inevitably be some unhurried words in some cases.

All three of them also said that they understood and would not say more. They can be regarded as knowing what a master is today, which is much more real than the martial arts dramas they watch on TV.

Jiang Chengyu also turned his attention back to this case at this time, the murderer has committed two crimes in a row, and it cannot be said that he will not commit the crime again, when the criminal police deal with this kind of case, they are not only worried that the murderer will kill more people if he commits the crime again, but also worried that if the murderer disappears, he will not be able to find any clues, and this case will be at the bottom of the box.

Does it really take the offender to commit the crime again and leave clues to find him?

He recalled everything he knew about the case in his head, and made a simple simulation of the murderer's crime.

What are the weaknesses of such a person who is not in a crowded area, who can perfectly avoid surveillance and leave no evidence? What was his motive for committing the crime? What are the murder weapons and modus operandi? Rao is his brain is very bright, and it is difficult to connect everything in the absence of conditions.

The method of murder is very simple, the death caused by the penetration of sharp weapons and the damage of organs, and the fact that the murder weapon was not found nearby, indicates that the murderer did not throw away the murder weapon at the first time, and the murder weapon has certain particularities.

How did the killer kill? The murderer walked on the road, saw a car parked where there was no monitoring, and then pried open the trunk and entered the car, destroyed the alarm device, hid in the car, and waited for the owner to come, while the owner was not injured, the owner was killed.

The way the owner of the car died should have been stabbed by the murderer the moment the rear door opened. The front seat of the car must not be able to hide people, it can only be hidden under the back seat of the car, but how can the murderer be sure that the owner of the car will definitely open the rear door?

It was late at night, and in the absence of lights, it was difficult for the owner to notice the scratches and check them, even if they made two cuts on the rear door. Then there is only one situation, after the owner gets in the car and starts the car, the door is opened, the owner gets out of the car to check, if the door is closed directly, there will be no direct contact with the murderer, so what is the situation, let the owner go to the other side of the door? The most direct situation is that the owner of the car finds something strange but not afraid of threats, and looks at the abnormal situation with curiosity.

The only thing that can be noticed by the owner after leaving the cab and going to the other side to check is only the abnormality on the window, but after the window is checked, no valuable clues have been found. It shows that the abnormality on the window is not pasted with a sticky substance, nor is it painted with a paintbrush, there is only one thing, a pendant with a suction cup. There was no similar finding in the car, and it may have been taken away by the murderer.

When the owner of the car turned to the inside of the door, the murderer shot her and hit her fatally, so it was inserted diagonally from the bottom up, and there was no blood on the ground, and it was also possible to think that the murderer put the deceased into the car in time without the slightest hesitation. After determining that the murderer fled the scene with the murder weapon under the cover of clothing, it was roughly confirmed that it was a suit with built-in pockets, and the murderer did not wear a suit to drive indicating that there were blood stains on the suit, and the murderer did not want others to know the style of his suit.

The masks, sunglasses and hats worn by the murderer when he entered the parking lot are also very common, and there are some people on the street who dress like that, so it does not arouse the alarm of the officers on duty at the entrance. Parking the car here, and there is just no surveillance, and there are also dead spots in the surveillance equipment in the nearby square, indicating that the murderer is very familiar with this place. From the surveillance records from the scene of the crime to the parking lot, it can also be seen that the murderer did not have the slightest time to destroy the evidence and arrived at the parking lot.

Then he came here because it was time to go to work in the morning, and the second could be that his home was nearby.

If he went to work in the company, if there were not a lot of blood stains on the black suit, it would not be obvious, it was already seven o'clock in the morning, and there would definitely be people walking around the square, and if the murderer fled if he didn't want to attract attention, in addition to the mask, all other disguises should be removed.

However, there were no witnesses at the scene to contact the police to confirm, which also came from the police, who adopted a blockade attitude towards such incidents that may not be solved without evidence, and could not publish the newspaper to find witnesses so as not to cause unnecessary social panic. After all, once there is no follow-up progress in these cases, if they cannot be solved, there are lawbreakers in society who will use this method to create greater chaos.

If the number of deaths in a short period of time increases, and the masses also spread the word, the police will also publish a report to explain the situation.

As for the other case, the police call was received at 5 a.m. at that time, although the victim's fatal injury was a sharp weapon in the neck artery, a dry and solid blood particle was found next to the wound that was different from the victim's own blood. The location of the crime is a place worth speculating, why did the murderer get there? How did he take the murder weapon this time, why did he take it away again, and why didn't he clean it properly?

While he was thinking about one question after another, the cocoon Yunyu coffee house arrived, and it seemed that the place was quite large. After putting Jiang Chengyu and the others down, Ah Da and Ah Er drove the car to park, with Jiang Chengyu there, Liu Zigeng also asked them to do their own thing, no need to follow, just wait for the car to come over.

Jiang Chengyu dialed Qin Lei's phone.

"Senior Qin, which seat are you, we have arrived."

Qin Lei's voice came from the other end of the phone, telling them where they were seated, and then Jiang Chengyu hung up the phone and took a few people in. After being led by the waiter, they came to the door of a private room, and after pushing the door in, Liu Zigeng and the three of them immediately found another person.

"Dad! Why are you here? First of all, Zhang Junzhe asked in surprise.

"Uncle Zhang is good!" Liu Zigeng and Chen Xiaohu both said hello to Zhang Jingwei.

"Sit down, your dad is going to ask your eldest brother for help this time." Zhang Jingwei beckoned them to sit down, patted Zhang Junzhe on the shoulder, and looked at Jiang Chengyu.

"Dad, Brother Jiang is the eldest brother that the three of us recognize together, he is amazing." Zhang Junzhe said to Zhang Jingwei, but was interrupted by Zhang Jingwei.

"This is Qin Lei, a police officer of our Criminal Investigation Corps, that is, a friend of your eldest brother. There is a case this time, Zi Geng, you don't have to think about it, just listen, if the others are not afraid, they can come up with ideas. This is the first time in so many years that Zhang Jingwei has discussed a case with juniors, and he also wants to get some views from these juniors that he can't think of.

After Qin Lei got Zhang Jingwei's instructions, he began to sort out all the relevant information on the coffee table and introduce it to several people. In addition to the information that Jiang Chengyu knew, there was some other information, which was about some detailed information obtained after the autopsy.

After the forensic autopsy report that came out this morning, the body found in the parking lot, the time of death was determined to be between 3 o'clock in the morning and 4 o'clock in the morning, all parts of the body were intact, no other injuries had been received, the length of the murder weapon was at least 18 centimeters, the narrowest was the tip of the blade, about one centimeter, the widest was about 3.5 centimeters, with a raised thickness of about 6 millimeters of cross blood groove, it was preliminarily determined to be a prismatic murder weapon, not a short dagger type as Jiang Chengyu guessed, so it was destined for the murderer to take away this special type of murder weapon.

The second deceased did not injure his internal organs, and no abnormalities were found after the dissection. However, it was found in his stomach that the woman had drunk some mixed alcoholic beverages before, and Zhang Jingwei and Qin Lei also found the nearby bar.